Patents by Inventor Fred Robert Heiker

Fred Robert Heiker has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • 2,8-disubstituted quinazolinones
    Patent number: 5721238
    Abstract: 2,8-Disubstituted quinazolinones are prepared by first subjecting the quinazolinone basic skeleton to condensation by customary reactions and then introducing the desired substituents into the 8-position. The compounds are suitable as active compounds in medicaments, in particular for the treatment of inflammations, thromboembolic diseases and cardiovascular diseases.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: February 24, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventors: Fred Robert Heiker, Ulrich Niewohner, Wolfgang Hartwig, Helmuth Schutz, Erwin Bischoff, Elisabeth Perzborn, Matthias Schramm